Back portion of a golf club head



FIG. 1 is a rear, perspective view from the toe of the back portion of a golf club head of the present invention;

FIG. 2 is a rear, elevational, perspective view thereof;

FIG. 3 is a heel view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a bottom, perspective view from the heel thereof;

FIG. 6 is a bottom, perspective view from the toe thereof;

FIG. 7 is a rear, perspective view from the heel thereof; and,

FIG. 8 is an enlarged, partial, bottom, perspective view from the heel thereof.

The broken line showing portions of the golf club head in FIGS. 1-8 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a back portion of a golf club head, as shown and described. 